[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"badge-catalog":3,"catalog-en":644},[4,11,17,23,29,35,42,48,54,61,67,73,79,86,92,98,104,110,116,122,128,134,140,146,152,158,164,170,176,182,188,194,200,206,212,218,224,230,236,242,248,254,260,266,272,278,284,290,296,302,308,314,320,326,332,338,344,350,356,362,368,374,380,386,392,398,404,410,416,422,428,434,440,446,452,458,464,470,476,482,488,494,500,506,512,518,524,530,536,542,548,554,560,566,572,578,584,590,596,602,608,614,620,626,632,638],{"id":5,"label":6,"name":7,"description":8,"rarity":9,"explanation":10},91,"curious_first","First Spark","Complete your very first lesson.","Common","Tap any node on the path, hit START, and get through the lesson. Every expert started exactly here.",{"id":12,"label":13,"name":14,"description":15,"rarity":9,"explanation":16},92,"curious_five","Warming Up","Complete 5 lessons.","Five lessons in and the gears are turning. This is where curiosity becomes a habit.",{"id":18,"label":19,"name":20,"description":21,"rarity":9,"explanation":22},93,"curious_ten","Getting Curious","Complete 10 lessons.","Ten curiosities in. You already know more about how tech works than most people around you.",{"id":24,"label":25,"name":26,"description":27,"rarity":9,"explanation":28},94,"curious_twenty_five","Down the Rabbit Hole","Complete 25 lessons.","Twenty-five lessons. You came for one fact and stayed for the whole rabbit hole.",{"id":30,"label":31,"name":32,"description":33,"rarity":9,"explanation":34},95,"curious_fifty","The Apprentice","Complete 50 lessons.","Fifty lessons. The ideas that sounded like magic are starting to sound like engineering.",{"id":36,"label":37,"name":38,"description":39,"rarity":40,"explanation":41},96,"curious_hundred","Triple Digits","Complete 100 lessons.","Rare","A hundred lessons! Your curiosity just crossed into three-digit territory.",{"id":43,"label":44,"name":45,"description":46,"rarity":40,"explanation":47},97,"curious_one_fifty","Deep Diver","Complete 150 lessons.","150 lessons deep. You're not skimming anymore, you're diving.",{"id":49,"label":50,"name":51,"description":52,"rarity":40,"explanation":53},98,"curious_two_hundred","Tech Explainer","Complete 200 lessons.","Two hundred lessons. You could explain most of these at a dinner table, and people would listen.",{"id":55,"label":56,"name":57,"description":58,"rarity":59,"explanation":60},99,"curious_three_hundred","Walking Wiki","Complete 300 lessons.","Epic","Three hundred lessons. Friends have started asking you things instead of looking them up.",{"id":62,"label":63,"name":64,"description":65,"rarity":59,"explanation":66},100,"curious_four_hundred","Brainiac","Complete 400 lessons.","Four hundred lessons in. More than half the path is behind you, and it shows.",{"id":68,"label":69,"name":70,"description":71,"rarity":59,"explanation":72},101,"curious_five_hundred","Mastermind","Complete 500 lessons.","Five hundred lessons. Only the final stretch of the path stands between you and knowing it all.",{"id":74,"label":75,"name":76,"description":77,"rarity":59,"explanation":78},102,"curious_six_hundred","Almost Omniscient","Complete 600 lessons.","Six hundred lessons. The finish line is in sight, and so is pretty much everything else.",{"id":80,"label":81,"name":82,"description":83,"rarity":84,"explanation":85},103,"curious_every","Know-It-All","Complete every lesson on the path.","Legendary","All 720 lessons. Every curiosity on the path, understood. There is nothing left to explain to you.",{"id":87,"label":88,"name":89,"description":90,"rarity":9,"explanation":91},104,"flawless_first","Clean Sheet","Pass a lesson with no mistakes.","Answer every test question right on the first try. Three stars, zero slips.",{"id":93,"label":94,"name":95,"description":96,"rarity":9,"explanation":97},105,"flawless_ten","Sharp Mind","Pass 10 lessons with no mistakes.","Ten perfect tests. You don't just read the lessons, you remember them.",{"id":99,"label":100,"name":101,"description":102,"rarity":40,"explanation":103},106,"flawless_fifty","Precision Mode","Pass 50 lessons with no mistakes.","Fifty flawless tests. Your accuracy is starting to look like a superpower.",{"id":105,"label":106,"name":107,"description":108,"rarity":59,"explanation":109},107,"flawless_one_fifty","Zero Errors","Pass 150 lessons with no mistakes.","150 lessons without a single slip. Even a compiler would be impressed.",{"id":111,"label":112,"name":113,"description":114,"rarity":84,"explanation":115},108,"flawless_four_hundred","Flawless Logic","Pass 400 lessons with no mistakes.","Four hundred perfect tests. That's not luck anymore, that's mastery.",{"id":117,"label":118,"name":119,"description":120,"rarity":40,"explanation":121},109,"spotless_zone","Spotless Zone","Get 3 stars on every node of a zone.","Nine nodes, nine perfect tests. A whole zone without a single mistake.",{"id":123,"label":124,"name":125,"description":126,"rarity":59,"explanation":127},110,"spotless_ten","Immaculate","Get 3 stars on every node of 10 zones.","Ten zones without a single slip. Perfection is starting to look like your default setting.",{"id":129,"label":130,"name":131,"description":132,"rarity":9,"explanation":133},111,"explorer_first","First Zone","Clear your first zone.","Complete every node in a zone to clear it and open the next one.",{"id":135,"label":136,"name":137,"description":138,"rarity":9,"explanation":139},112,"explorer_three","Trailblazer","Clear 3 zones.","Three zones down. Every one is a whole new world, and you've already seen three.",{"id":141,"label":142,"name":143,"description":144,"rarity":9,"explanation":145},113,"explorer_five","Explorer","Clear 5 zones.","Five zones behind you. The path keeps going, and so do the surprises.",{"id":147,"label":148,"name":149,"description":150,"rarity":9,"explanation":151},114,"explorer_ten","Wayfinder","Clear 10 zones.","Ten zones cleared. You know your way around the path now.",{"id":153,"label":154,"name":155,"description":156,"rarity":40,"explanation":157},115,"explorer_fifteen","Voyager","Clear 15 zones.","Fifteen zones. Like the famous space probe, you just keep going farther.",{"id":159,"label":160,"name":161,"description":162,"rarity":40,"explanation":163},116,"explorer_twenty","Pathfinder","Clear 20 zones.","Twenty zones explored. Every new zone is a fresh set of curiosities to crack.",{"id":165,"label":166,"name":167,"description":168,"rarity":40,"explanation":169},117,"explorer_thirty","Navigator","Clear 30 zones.","Thirty zones cleared. You could draw this path from memory.",{"id":171,"label":172,"name":173,"description":174,"rarity":59,"explanation":175},118,"explorer_forty_five","Globetrotter","Clear 45 zones.","Forty-five zones. You're past the halfway mark and still going strong.",{"id":177,"label":178,"name":179,"description":180,"rarity":59,"explanation":181},119,"explorer_sixty","Frontier Breaker","Clear 60 zones.","Sixty zones. Only the last stretch of the path is left to explore.",{"id":183,"label":184,"name":185,"description":186,"rarity":84,"explanation":187},120,"explorer_every","Master of the Path","Clear every zone.","Every zone, cleared. You walked the whole path from the first spark to the last lesson.",{"id":189,"label":190,"name":191,"description":192,"rarity":9,"explanation":193},121,"milestone_first","First Milestone","Complete your first super node.","The big glowing node in each zone is its headline lesson. Clear one to earn this.",{"id":195,"label":196,"name":197,"description":198,"rarity":9,"explanation":199},122,"milestone_five","Headliner","Complete 5 super nodes.","Every zone has one big headline lesson. You've conquered five of them.",{"id":201,"label":202,"name":203,"description":204,"rarity":40,"explanation":205},123,"milestone_fifteen","Milestone Hunter","Complete 15 super nodes.","Fifteen headline lessons. You go looking for the big ones.",{"id":207,"label":208,"name":209,"description":210,"rarity":40,"explanation":211},124,"milestone_twenty_five","Showstopper","Complete 25 super nodes.","Twenty-five super nodes. The biggest ideas on the path keep falling to you.",{"id":213,"label":214,"name":215,"description":216,"rarity":59,"explanation":217},125,"milestone_forty","Milestone Master","Complete 40 super nodes.","Forty headline lessons. Half of the biggest ideas in the game, conquered.",{"id":219,"label":220,"name":221,"description":222,"rarity":59,"explanation":223},126,"milestone_sixty","Headline Act","Complete 60 super nodes.","Sixty super nodes. The headline lessons have met their match.",{"id":225,"label":226,"name":227,"description":228,"rarity":84,"explanation":229},127,"milestone_every","All the Milestones","Complete every super node.","Every headline lesson on the path. Not one big idea got away.",{"id":231,"label":232,"name":233,"description":234,"rarity":9,"explanation":235},128,"track_math_five","Number Cruncher","Complete 5 lessons in Mind-Bending Math & Games.","Puzzles, paradoxes and games that bend your brain. Five down, and you're hooked.",{"id":237,"label":238,"name":239,"description":240,"rarity":9,"explanation":241},129,"track_energy_five","Heat Seeker","Complete 5 lessons in Energy, Heat & Motion.","Engines, heat and motion. Five lessons in, you see physics everywhere.",{"id":243,"label":244,"name":245,"description":246,"rarity":9,"explanation":247},130,"track_ai_five","Bot Whisperer","Complete 5 lessons in AI & Machine Learning.","Five lessons on how machines learn. The magic is starting to look like math.",{"id":249,"label":250,"name":251,"description":252,"rarity":9,"explanation":253},131,"track_data_five","Odds Maker","Complete 5 lessons in Data & Probability.","Five lessons on data and chance. Coincidences will never look the same.",{"id":255,"label":256,"name":257,"description":258,"rarity":9,"explanation":259},132,"track_security_five","Scam Spotter","Complete 5 lessons in Security & Scams.","Five lessons on security and scams. The next phishing email is in for a surprise.",{"id":261,"label":262,"name":263,"description":264,"rarity":9,"explanation":265},133,"track_internet_five","Netizen","Complete 5 lessons in The Internet & Web.","Five lessons on how the internet really works. The cloud is looking a lot less cloudy.",{"id":267,"label":268,"name":269,"description":270,"rarity":9,"explanation":271},134,"track_space_five","Stargazer","Complete 5 lessons in Space, GPS & Maps.","Five lessons on space, GPS and maps. You'll never look at a map pin the same way.",{"id":273,"label":274,"name":275,"description":276,"rarity":9,"explanation":277},135,"track_history_five","Bug Hunter","Complete 5 lessons in Computing History & Legendary Bugs.","Five lessons from computing history and its legendary bugs. Some mistakes made history.",{"id":279,"label":280,"name":281,"description":282,"rarity":9,"explanation":283},136,"track_sound_five","Signal Seeker","Complete 5 lessons in Sound, Radio & Information.","Five lessons on sound, radio and information. The invisible waves around you are starting to make sense.",{"id":285,"label":286,"name":287,"description":288,"rarity":9,"explanation":289},137,"track_hardware_five","Under the Hood","Complete 5 lessons in Inside the Computer.","Five lessons inside the computer. The box on your desk is starting to make sense.",{"id":291,"label":292,"name":293,"description":294,"rarity":9,"explanation":295},138,"track_crypto_five","Codebreaker","Complete 5 lessons in Codes, Cryptography & Blockchain.","Five lessons on codes and cryptography. Secret messages are starting to look less secret.",{"id":297,"label":298,"name":299,"description":300,"rarity":9,"explanation":301},139,"track_engineering_five","Tinkerer","Complete 5 lessons in Engineering & Machines.","Five lessons on engineering and machines. You've started wondering how everything is built.",{"id":303,"label":304,"name":305,"description":306,"rarity":9,"explanation":307},140,"track_algorithms_five","Pattern Finder","Complete 5 lessons in Algorithms & Emergence.","Five lessons on algorithms and emergence. Simple rules, surprisingly big results.",{"id":309,"label":310,"name":311,"description":312,"rarity":9,"explanation":313},141,"track_pixels_five","Pixel Peeper","Complete 5 lessons in Images, Screens & Games.","Five lessons on images, screens and games. Every screen you look at is full of tricks.",{"id":315,"label":316,"name":317,"description":318,"rarity":9,"explanation":319},142,"track_perception_five","Mind Reader","Complete 5 lessons in Mind & Perception.","Five lessons on the mind and perception. Your own brain is the strangest machine of all.",{"id":321,"label":322,"name":323,"description":324,"rarity":9,"explanation":325},143,"track_quantum_five","Quantum Leap","Complete 5 lessons in Quantum & Relativity.","Five lessons on quantum physics and relativity. Reality just got a lot weirder.",{"id":327,"label":328,"name":329,"description":330,"rarity":9,"explanation":331},144,"track_networks_five","Packet Pusher","Complete 5 lessons in How Data Travels.","Five lessons on how data travels. Your messages take quite the journey.",{"id":333,"label":334,"name":335,"description":336,"rarity":59,"explanation":337},145,"track_math_all","Math Wizard","Complete every lesson in Mind-Bending Math & Games.","Every math and games lesson on the path, mastered. Numbers do what you tell them now.",{"id":339,"label":340,"name":341,"description":342,"rarity":59,"explanation":343},146,"track_energy_all","Prime Mover","Complete every lesson in Energy, Heat & Motion.","Every lesson on energy, heat and motion. You know what really makes things go.",{"id":345,"label":346,"name":347,"description":348,"rarity":59,"explanation":349},147,"track_ai_all","Machine Mind","Complete every lesson in AI & Machine Learning.","Every AI lesson on the path. You understand the machines better than most people who use them.",{"id":351,"label":352,"name":353,"description":354,"rarity":59,"explanation":355},148,"track_data_all","Data Oracle","Complete every lesson in Data & Probability.","Every data and probability lesson, done. You read numbers like other people read headlines.",{"id":357,"label":358,"name":359,"description":360,"rarity":59,"explanation":361},149,"track_security_all","Cyber Guardian","Complete every lesson in Security & Scams.","Every security lesson on the path. Scammers would rather pick someone else.",{"id":363,"label":364,"name":365,"description":366,"rarity":59,"explanation":367},150,"track_internet_all","Web Weaver","Complete every lesson in The Internet & Web.","Every internet and web lesson, mastered. You know what happens after you hit Enter.",{"id":369,"label":370,"name":371,"description":372,"rarity":59,"explanation":373},151,"track_space_all","Mission Control","Complete every lesson in Space, GPS & Maps.","Every lesson on space, GPS and maps. From satellites to street maps, you've got it covered.",{"id":375,"label":376,"name":377,"description":378,"rarity":59,"explanation":379},152,"track_history_all","Retro Legend","Complete every lesson in Computing History & Legendary Bugs.","Every computing history lesson on the path. You know the legends, the crashes and the comebacks.",{"id":381,"label":382,"name":383,"description":384,"rarity":59,"explanation":385},153,"track_sound_all","Frequency Master","Complete every lesson in Sound, Radio & Information.","Every sound and radio lesson, done. You're tuned in to how information travels through the air.",{"id":387,"label":388,"name":389,"description":390,"rarity":59,"explanation":391},154,"track_hardware_all","Silicon Sage","Complete every lesson in Inside the Computer.","Every lesson inside the computer. You know how the machine in your pocket really works.",{"id":393,"label":394,"name":395,"description":396,"rarity":59,"explanation":397},155,"track_crypto_all","Cipher Master","Complete every lesson in Codes, Cryptography & Blockchain.","Every lesson on codes, cryptography and blockchain. You know how secrets are kept, and how they're cracked.",{"id":399,"label":400,"name":401,"description":402,"rarity":59,"explanation":403},156,"track_engineering_all","Master Builder","Complete every lesson in Engineering & Machines.","Every engineering lesson on the path. Bridges, engines and gadgets hold no secrets from you.",{"id":405,"label":406,"name":407,"description":408,"rarity":59,"explanation":409},157,"track_algorithms_all","Algorithm Ace","Complete every lesson in Algorithms & Emergence.","Every algorithm lesson, mastered. You see the hidden rules behind how things organize themselves.",{"id":411,"label":412,"name":413,"description":414,"rarity":59,"explanation":415},158,"track_pixels_all","Pixel Perfect","Complete every lesson in Images, Screens & Games.","Every lesson on images, screens and games. You know exactly how the picture gets on the glass.",{"id":417,"label":418,"name":419,"description":420,"rarity":59,"explanation":421},159,"track_perception_all","Master of Illusions","Complete every lesson in Mind & Perception.","Every mind and perception lesson. You know when your brain is fooling you, and why.",{"id":423,"label":424,"name":425,"description":426,"rarity":59,"explanation":427},160,"track_quantum_all","Spacetime Bender","Complete every lesson in Quantum & Relativity.","Every quantum and relativity lesson, done. Time and space will never feel solid again.",{"id":429,"label":430,"name":431,"description":432,"rarity":59,"explanation":433},161,"track_networks_all","Bandwidth Boss","Complete every lesson in How Data Travels.","Every lesson on how data travels. You could map a message's whole trip around the world.",{"id":435,"label":436,"name":437,"description":438,"rarity":9,"explanation":439},162,"wonder_first","First Wonder","Claim your first Daily Wonder.","Open the Daily Wonder tab and claim today's tech curiosity. A new one waits every day.",{"id":441,"label":442,"name":443,"description":444,"rarity":9,"explanation":445},163,"wonder_three","Wonderstruck","Claim 3 Daily Wonders.","Three tech wonders in your collection. Curiosity looks good on you.",{"id":447,"label":448,"name":449,"description":450,"rarity":9,"explanation":451},164,"wonder_five","Wonder Collector","Claim 5 Daily Wonders.","Five wonders collected. Your cabinet of curiosities is taking shape.",{"id":453,"label":454,"name":455,"description":456,"rarity":40,"explanation":457},165,"wonder_ten","Curator","Claim 10 Daily Wonders.","Ten wonders! You're curating your own museum of tech marvels.",{"id":459,"label":460,"name":461,"description":462,"rarity":40,"explanation":463},166,"wonder_twenty_five","Cabinet of Curiosities","Claim 25 Daily Wonders.","Twenty-five wonders, and every one of them is a story worth telling.",{"id":465,"label":466,"name":467,"description":468,"rarity":40,"explanation":469},167,"wonder_fifty","Wonder Hoarder","Claim 50 Daily Wonders.","Fifty wonders and counting. You never miss a chance to be amazed.",{"id":471,"label":472,"name":473,"description":474,"rarity":59,"explanation":475},168,"wonder_hundred","Museum Keeper","Claim 100 Daily Wonders.","A hundred wonders in your collection. That's a whole museum of tech curiosities.",{"id":477,"label":478,"name":479,"description":480,"rarity":59,"explanation":481},169,"wonder_two_hundred","Wonder Archivist","Claim 200 Daily Wonders.","Two hundred wonders. Your archive of curiosities could fill a library wing.",{"id":483,"label":484,"name":485,"description":486,"rarity":84,"explanation":487},170,"wonder_full_year","A Year of Wonders","Claim 365 Daily Wonders.","365 wonders. A whole year of tech curiosities, collected one day at a time.",{"id":489,"label":490,"name":491,"description":492,"rarity":40,"explanation":493},171,"wonder_perfect_week","Perfect Week","Claim a Daily Wonder every day from Monday to Sunday.","Fill every day of the weekly calendar with a check. Seven days, seven wonders.",{"id":495,"label":496,"name":497,"description":498,"rarity":59,"explanation":499},172,"wonder_month","Wonder Month","Claim a Daily Wonder 30 days in a row.","Thirty days without missing a single wonder. Now that's dedication.",{"id":501,"label":502,"name":503,"description":504,"rarity":9,"explanation":505},173,"habit_three_days","Spark","Reach a 3-day streak.","Learn something three days in a row. That's how every good habit starts.",{"id":507,"label":508,"name":509,"description":510,"rarity":9,"explanation":511},174,"habit_seven_days","On Fire","Reach a 7-day streak.","A full week of curiosity. Keep the flame alive and it only gets easier.",{"id":513,"label":514,"name":515,"description":516,"rarity":9,"explanation":517},175,"habit_two_weeks","Two Weeks Strong","Reach a 14-day streak.","Fourteen days in a row. This isn't a phase anymore, it's a habit.",{"id":519,"label":520,"name":521,"description":522,"rarity":40,"explanation":523},176,"habit_thirty_days","Habit Formed","Reach a 30-day streak.","Thirty days straight. Learning something new is just part of your day now.",{"id":525,"label":526,"name":527,"description":528,"rarity":40,"explanation":529},177,"habit_fifty_days","Half Century","Reach a 50-day streak.","Fifty days without a break. That's more staying power than most New Year's resolutions.",{"id":531,"label":532,"name":533,"description":534,"rarity":59,"explanation":535},178,"habit_hundred_days","Unstoppable","Reach a 100-day streak.","A hundred days in a row. Very few people ever get here.",{"id":537,"label":538,"name":539,"description":540,"rarity":59,"explanation":541},179,"habit_two_hundred_days","Perpetual Motion","Reach a 200-day streak.","Two hundred days without stopping. Physics says perpetual motion is impossible. You're testing that.",{"id":543,"label":544,"name":545,"description":546,"rarity":84,"explanation":547},180,"habit_full_year","Year of Curiosity","Reach a 365-day streak.","A whole year, every single day. That's a full year of curiosity in a row.",{"id":549,"label":550,"name":551,"description":552,"rarity":40,"explanation":553},181,"habit_shield_saved","The Shielded","Have a streak shield save your streak.","Missed a day? A streak shield stepped in and kept your streak alive.",{"id":555,"label":556,"name":557,"description":558,"rarity":9,"explanation":559},182,"knowledge_one_hundred","First Hundred","Earn 100 XP.","Your first hundred XP. Every lesson pays, and the deeper zones pay more.",{"id":561,"label":562,"name":563,"description":564,"rarity":9,"explanation":565},183,"knowledge_five_hundred","Quick Learner","Earn 500 XP.","Every lesson pays XP, and the deeper zones pay more. Five hundred is a strong start.",{"id":567,"label":568,"name":569,"description":570,"rarity":9,"explanation":571},184,"knowledge_one_thousand","Kilobyte","Earn 1,000 XP.","A thousand XP. Call it your first kilobyte of knowledge.",{"id":573,"label":574,"name":575,"description":576,"rarity":40,"explanation":577},185,"knowledge_twenty_five_hundred","Well Read","Earn 2,500 XP.","Two and a half thousand XP. You've read your way deep into the path.",{"id":579,"label":580,"name":581,"description":582,"rarity":40,"explanation":583},186,"knowledge_five_thousand","Overclocked","Earn 5,000 XP.","Five thousand XP. Your brain is running faster than its factory settings.",{"id":585,"label":586,"name":587,"description":588,"rarity":59,"explanation":589},187,"knowledge_ten_thousand","Scholar","Earn 10,000 XP.","Ten thousand XP. That takes most of the path, played well.",{"id":591,"label":592,"name":593,"description":594,"rarity":84,"explanation":595},188,"knowledge_twenty_five_thousand","Living Encyclopedia","Earn 25,000 XP.","Twenty-five thousand XP. More than the whole path pays in one go, so you came back for more.",{"id":597,"label":598,"name":599,"description":600,"rarity":9,"explanation":601},189,"day_three","Hat Trick","Complete 3 new lessons in one day.","Three fresh lessons in a single day. You're on a roll.",{"id":603,"label":604,"name":605,"description":606,"rarity":9,"explanation":607},190,"day_five","Binge Learner","Complete 5 new lessons in one day.","Five new lessons in one day. Better than binge-watching, and you'll remember it.",{"id":609,"label":610,"name":611,"description":612,"rarity":40,"explanation":613},191,"day_ten","Brain Marathon","Complete 10 new lessons in one day.","Ten new lessons in a single day. That's a marathon for the mind.",{"id":615,"label":616,"name":617,"description":618,"rarity":40,"explanation":619},192,"time_night_owl","Night Owl","Complete a lesson between midnight and 5 AM.","Some ideas hit different after midnight. Just don't forget to sleep.",{"id":621,"label":622,"name":623,"description":624,"rarity":40,"explanation":625},193,"time_early_bird","Early Bird","Complete a lesson between 5 AM and 8 AM.","Learning before breakfast. The early bird gets the knowledge.",{"id":627,"label":628,"name":629,"description":630,"rarity":9,"explanation":631},194,"time_weekend","Weekend Warrior","Complete lessons on a Saturday and the Sunday after it.","Curiosity doesn't take weekends off, and neither do you.",{"id":633,"label":634,"name":635,"description":636,"rarity":40,"explanation":637},195,"podium_top_three","On the Podium","Finish in the top 3 of a node's leaderboard.","Pass a lesson with a better result than almost everyone else who has played it.",{"id":639,"label":640,"name":641,"description":642,"rarity":59,"explanation":643},196,"podium_first","Gold Medalist","Finish first on a node's leaderboard.","The best result on a node's leaderboard is yours. Everyone else is chasing you now.",[645,723,796,863,931,1003,1073,1140,1209,1277,1348,1406,1464,1521,1578,1635,1692,1748,1798,1851,1903,1953,2010,2074,2138,2202,2264,2327,2391,2454],{"zone":646,"theme":647,"lessons":652,"topics":714},1,{"key":648,"name":649,"light":650,"dark":651},"origin-core","Origin Core","#4F46E5","#6C63FF",[653,659,666,673,680,686,693,700,707],{"stage":646,"step":646,"id":654,"node":646,"title":655,"subtitle":656,"topic":657,"track":658},"six-degrees","Six Degrees","You're about six people away from almost anyone","Graph Theory","Algorithms & Emergence",{"stage":646,"step":660,"id":661,"node":660,"title":662,"subtitle":663,"topic":664,"track":665},2,"the-birthday-surprise","The Birthday Surprise","With just 23 people, a shared birthday is more likely than not","Probability","Data & Probability",{"stage":646,"step":667,"id":668,"node":667,"title":669,"subtitle":670,"topic":671,"track":672},3,"broken-qr-codes-still-work","Broken QR Codes Still Work","Rip out part of a QR code and it can still scan","Coding Theory","Sound, Radio & Information",{"stage":646,"step":674,"id":675,"node":674,"title":676,"subtitle":677,"topic":678,"track":679},4,"mercators-lie","Mercator's Lie","Greenland looks as big as Africa; Africa is 14 times bigger","Map Projections","Space, GPS & Maps",{"stage":646,"step":681,"id":682,"node":681,"title":683,"subtitle":684,"topic":685,"track":679},5,"why-flights-curve","Why Flights Curve","The shortest route looks bent on a flat map","Geography",{"stage":646,"step":687,"id":688,"node":687,"title":689,"subtitle":690,"topic":691,"track":692},6,"why-ai-cant-count-the-rs-in-strawberry","Why AI Can't Count the R's in Strawberry","AI reads chunks of words, not letters","Natural Language Processing","AI & Machine Learning",{"stage":646,"step":694,"id":695,"node":694,"title":696,"subtitle":697,"topic":698,"track":699},7,"journey-of-a-click","Journey of a Click","Tap a link and your request circles the planet in under a second","Internet & Web","The Internet & Web",{"stage":646,"step":701,"id":702,"node":701,"title":703,"subtitle":704,"topic":705,"track":706},8,"the-blind-spot","The Blind Spot","There's a hole in your vision and your brain paints over it","Visual Perception","Mind & Perception",{"stage":646,"step":708,"id":709,"node":708,"title":710,"subtitle":711,"topic":712,"track":713},9,"hilberts-hotel","Hilbert's Hotel","A full hotel with infinitely many rooms can always fit more guests","Infinity","Mind-Bending Math & Games",[715,716,717,718,719,720,721,722],{"track":679,"count":660},{"track":658,"count":646},{"track":665,"count":646},{"track":672,"count":646},{"track":692,"count":646},{"track":699,"count":646},{"track":706,"count":646},{"track":713,"count":646},{"zone":660,"theme":724,"lessons":729,"topics":787},{"key":725,"name":726,"light":727,"dark":728},"firewall-keep","Firewall 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places","Classical Cryptography","Codes, Cryptography & Blockchain",{"stage":674,"step":674,"id":890,"node":891,"title":892,"subtitle":893,"topic":894,"track":888},"counting-letters-breaks-codes",31,"Counting Letters Breaks Codes","A 9th-century scholar cracked substitution ciphers with a tally chart","Codebreaking",{"stage":674,"step":681,"id":896,"node":897,"title":898,"subtitle":899,"topic":887,"track":888},"the-unbreakable-cipher-that-broke",32,"The Unbreakable Cipher That Broke","Vigenère's code was called indecipherable for 300 years",{"stage":674,"step":687,"id":901,"node":902,"title":903,"subtitle":904,"topic":905,"track":888},"the-secret-handshake",33,"The Secret Handshake","Two strangers can agree on a secret while everyone listens","Cryptography",{"stage":674,"step":694,"id":907,"node":908,"title":909,"subtitle":910,"topic":911,"track":912},"the-quantum-tunnel",34,"The Quantum Tunnel","Particles can cross walls they can't climb, and your phone's memory relies on it","Quantum 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orbit","Astronomy",{"stage":687,"step":667,"id":1023,"node":1024,"title":1025,"subtitle":1026,"topic":767,"track":713},"the-pigeonhole-trick",48,"The Pigeonhole Trick","Too many pigeons for the holes guarantees a hidden match",{"stage":687,"step":674,"id":1028,"node":1029,"title":1030,"subtitle":1031,"topic":1032,"track":699},"incognito-isnt-invisible",49,"Incognito Isn't Invisible","Private mode hides your history from your phone, not from the internet","Online Privacy",{"stage":687,"step":681,"id":1034,"node":1035,"title":1036,"subtitle":1037,"topic":1038,"track":748},"the-qr-sticker-scam",50,"The QR Sticker Scam","A fake code taped over the parking meter sends your card to a thief","Online Safety",{"stage":687,"step":687,"id":1040,"node":1041,"title":1042,"subtitle":1043,"topic":1044,"track":888},"change-one-letter-change-everything",51,"Change One Letter, Change Everything","A hash is a fingerprint that flips totally at the smallest change","Cryptographic Hashing",{"stage":687,"step":694,"id":1046,"node":1047,"title":1048,"subtitle":1049,"topic":1050,"track":741},"everything-is-binary",52,"Everything Is Binary","Songs, photos and this sentence are all just ons and offs","Binary",{"stage":687,"step":701,"id":1052,"node":1053,"title":1054,"subtitle":1055,"topic":1056,"track":912},"atoms-are-mostly-empty",53,"Atoms Are Mostly Empty","If an atom were a stadium, the nucleus would be a marble","Atomic Physics",{"stage":687,"step":708,"id":1058,"node":1059,"title":1060,"subtitle":1061,"topic":1062,"track":855},"your-fridge-doesnt-make-cold",54,"Your Fridge Doesn't Make Cold","It pumps heat out of the box and dumps it into your kitchen","Thermal 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truth",{"stage":694,"step":667,"id":1092,"node":1093,"title":1094,"subtitle":1095,"topic":956,"track":658},"sorting-race",57,"Sorting Race","The right method beats a faster computer",{"stage":694,"step":674,"id":1097,"node":1098,"title":1099,"subtitle":1100,"topic":1101,"track":944},"light-that-bends-around-corners",58,"Light That Bends Around Corners","Light can be trapped inside a glass thread","Fiber Optics",{"stage":694,"step":681,"id":1103,"node":1104,"title":1105,"subtitle":1106,"topic":1107,"track":944},"the-undersea-internet",59,"The Undersea Internet","Almost all intercontinental data travels through cables on the ocean floor","Internet Infrastructure",{"stage":694,"step":687,"id":1109,"node":1110,"title":1111,"subtitle":1112,"topic":1113,"track":963},"crumple-zones",60,"Crumple Zones","Cars protect people by crushing slowly","Automotive Safety",{"stage":694,"step":694,"id":1115,"node":1116,"title":1117,"subtitle":1118,"topic":664,"track":665},"the-gamblers-fallacy",61,"The Gambler's Fallacy","After five heads, the coin still has no memory",{"stage":694,"step":701,"id":1120,"node":1121,"title":1122,"subtitle":1123,"topic":1124,"track":672},"barcodes",62,"Barcodes","Black and white stripes are just numbers in disguise","Data Encoding",{"stage":694,"step":708,"id":1126,"node":1127,"title":1128,"subtitle":1129,"topic":1130,"track":786},"the-first-website-is-still-online",63,"The First Website Is Still Online","You can still visit the page Tim Berners-Lee published in 1991","Web History",[1132,1133,1134,1135,1136,1137,1138,1139],{"track":944,"count":660},{"track":741,"count":646},{"track":755,"count":646},{"track":658,"count":646},{"track":963,"count":646},{"track":665,"count":646},{"track":672,"count":646},{"track":786,"count":646},{"zone":701,"theme":1141,"lessons":1146,"topics":1199},{"key":1142,"name":1143,"light":1144,"dark":1145},"pixel-drift","Pixel 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minutes","Spaceflight",{"stage":701,"step":681,"id":1172,"node":1173,"title":1174,"subtitle":1175,"topic":767,"track":713},"the-party-puzzle",68,"The Party Puzzle","At any party of six, three are all friends or all strangers",{"stage":701,"step":687,"id":1177,"node":1178,"title":1179,"subtitle":1180,"topic":1181,"track":699},"half-the-internet-is-robots",69,"Half the Internet Is Robots","Nearly half of all web traffic is not human","Internet Traffic",{"stage":701,"step":694,"id":1183,"node":1184,"title":1185,"subtitle":1186,"topic":761,"track":748},"would-you-plug-it-in",70,"Would You Plug It In?","Nearly half of dropped USB sticks got plugged in",{"stage":701,"step":701,"id":1188,"node":1189,"title":1190,"subtitle":1191,"topic":1192,"track":855},"the-sonic-boom",71,"The Sonic Boom","Outrun your own sound and it piles up into a shock wave","Acoustics",{"stage":701,"step":708,"id":1194,"node":1195,"title":1196,"subtitle":1197,"topic":1198,"track":755},"the-missing-yellow",72,"The Missing Yellow","Your screen shows yellow without a single yellow light","Color Science",[1200,1201,1202,1203,1204,1205,1206,1207,1208],{"track":944,"count":646},{"track":692,"count":646},{"track":706,"count":646},{"track":679,"count":646},{"track":713,"count":646},{"track":699,"count":646},{"track":748,"count":646},{"track":855,"count":646},{"track":755,"count":646},{"zone":708,"theme":1210,"lessons":1215,"topics":1268},{"key":1211,"name":1212,"light":1213,"dark":1214},"circuit-grove","Circuit Grove","#208157","#249e69",[1216,1222,1228,1234,1240,1246,1251,1256,1262],{"stage":708,"step":646,"id":1217,"node":1218,"title":1219,"subtitle":1220,"topic":1221,"track":741},"the-desk-and-the-warehouse",73,"The Desk and the Warehouse","Computers keep a tiny super-fast memory for what you'll need next","Computer Architecture",{"stage":708,"step":660,"id":1223,"node":1224,"title":1225,"subtitle":1226,"topic":1227,"track":944},"the-lost-packet",74,"The Lost Packet","Missing pieces are requested again without restarting everything","Reliable Networking",{"stage":708,"step":667,"id":1229,"node":1230,"title":1231,"subtitle":1232,"topic":1233,"track":755},"why-weather-presenters-never-wear-green",75,"Why Weather Presenters Never Wear Green","One color can be replaced with an entire world","Visual Effects",{"stage":708,"step":674,"id":1235,"node":1236,"title":1237,"subtitle":1238,"topic":1239,"track":658},"the-tower-of-hanoi",76,"The Tower of Hanoi","Moving 64 disks would take longer than the universe has existed","Recursion",{"stage":708,"step":681,"id":1241,"node":1242,"title":1243,"subtitle":1244,"topic":1245,"track":963},"otis-cut-the-rope",77,"Otis Cut the Rope","Elevators became safe when one inventor cut his own cable in public","Safety Engineering",{"stage":708,"step":687,"id":1247,"node":1248,"title":1249,"subtitle":1250,"topic":657,"track":658},"the-bridges-of-k-nigsberg",78,"The Bridges of Königsberg","A Sunday-stroll puzzle invented a whole branch of math",{"stage":708,"step":694,"id":1252,"node":1253,"title":1254,"subtitle":1255,"topic":664,"track":665},"the-sticker-album-problem",79,"The Sticker Album Problem","Finding the last few stickers takes longer than the rest combined",{"stage":708,"step":701,"id":1257,"node":1258,"title":1259,"subtitle":1260,"topic":1261,"track":672},"the-phantom-singer",80,"The Phantom Singer","Two speakers can put a voice where there's no speaker at all","Audio Engineering",{"stage":708,"step":708,"id":1263,"node":1264,"title":1265,"subtitle":1266,"topic":1267,"track":786},"the-internets-first-word-was-lo",81,"The Internet's First Word Was ‘LO’","The first message crashed after two letters","Internet 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bad at being random, and a machine can exploit it","Game Theory",{"stage":810,"step":674,"id":1869,"node":513,"title":1870,"subtitle":1871,"topic":1872,"track":741},"the-vote-from-outer-space","The Vote From Outer Space","A cosmic ray may have added 4,096 votes in a Belgian election","Binary Computing",{"stage":810,"step":681,"id":1874,"node":519,"title":1875,"subtitle":1876,"topic":1877,"track":944},"fast-internet-slow-pages","Fast Internet, Slow Pages","Bandwidth isn't speed; round trips add up","Network Performance",{"stage":810,"step":687,"id":1879,"node":525,"title":1880,"subtitle":1881,"topic":1882,"track":755},"why-characters-fall-through-walls","Why Characters Fall Through Walls","Games check for collisions in snapshots, and fast things slip between them","Game Physics",{"stage":810,"step":694,"id":1884,"node":531,"title":1885,"subtitle":1886,"topic":887,"track":888},"the-enigma-machine","The Enigma Machine","158 quintillion settings, changed every single 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off",{"stage":816,"step":660,"id":1910,"node":555,"title":1911,"subtitle":1912,"topic":1913,"track":963},"the-safety-factor","The Safety Factor","Engineers build things several times stronger than needed","Structural Engineering",{"stage":816,"step":667,"id":1915,"node":561,"title":1916,"subtitle":1917,"topic":848,"track":713},"the-rule-of-72","The Rule of 72","Divide 72 by an interest rate to find how long money takes to double",{"stage":816,"step":674,"id":1919,"node":567,"title":1920,"subtitle":1921,"topic":664,"track":665},"why-the-bus-always-takes-longer","Why the Bus Always Takes Longer","You're more likely to arrive during a long gap",{"stage":816,"step":681,"id":1923,"node":573,"title":1924,"subtitle":1925,"topic":1926,"track":672},"how-mp3-throws-sound-away","How MP3 Throws Sound Away","It deletes sounds your ear can't hear anyway","Sound 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drop ends where it started",{"stage":828,"step":660,"id":2018,"node":2019,"title":2020,"subtitle":2021,"topic":2022,"track":855},"why-wind-turbines-have-three-blades",200,"Why Wind Turbines Have Three Blades","Not two, not four: three is the sweet spot","Wind Energy",{"stage":828,"step":667,"id":2024,"node":2025,"title":2026,"subtitle":2027,"topic":2028,"track":741},"stack-overflow",201,"Stack Overflow","The crash the famous programmers' website is named after","Computer Science",{"stage":828,"step":674,"id":2030,"node":2031,"title":2032,"subtitle":2033,"topic":2034,"track":944},"the-internet-is-a-stack-of-envelopes",202,"The Internet Is a Stack of Envelopes","Global communication works because each layer has one job","Network Protocols",{"stage":828,"step":681,"id":2036,"node":2037,"title":2038,"subtitle":2039,"topic":2040,"track":755},"jaggies",203,"Jaggies","Blurring edge pixels slightly makes diagonal lines look smooth","Raster Graphics",{"stage":828,"step":687,"id":2042,"node":2043,"title":2044,"subtitle":2045,"topic":2046,"track":658},"the-unbeatable-tic-tac-toe",204,"The Unbeatable Tic-Tac-Toe","A computer that looks ahead at every move can never lose","Game AI",{"stage":828,"step":694,"id":2048,"node":2049,"title":2050,"subtitle":2051,"topic":2052,"track":963},"the-elevator-counterweight",205,"The Elevator Counterweight","A hidden weight means the motor barely lifts anything","Mechanical Engineering",{"stage":828,"step":701,"id":2054,"node":2055,"title":2056,"subtitle":2057,"topic":2058,"track":665},"why-the-other-queue-always-moves-faster",206,"Why the Other Line Always Moves Faster","With three lines, yours is the fastest only a third of the time","Queueing Theory",{"stage":828,"step":708,"id":2060,"node":2061,"title":2062,"subtitle":2063,"topic":2064,"track":944},"why-wi-fi-dies-in-the-kitchen",207,"Why Wi-Fi Dies in the Kitchen","Microwaves, walls and water all fight your signal","Wireless Networks",[2066,2067,2068,2069,2070,2071,2072,2073],{"track":944,"count":660},{"track":713,"count":646},{"track":855,"count":646},{"track":741,"count":646},{"track":755,"count":646},{"track":658,"count":646},{"track":963,"count":646},{"track":665,"count":646},{"zone":834,"theme":1141,"lessons":2075,"topics":2128},[2076,2082,2087,2093,2099,2105,2111,2116,2122],{"stage":834,"step":646,"id":2077,"node":2078,"title":2079,"subtitle":2080,"topic":2081,"track":672},"44-100-snapshots-a-second",208,"44,100 Snapshots a Second","Digital audio is a string of measurements, not a wave","Digital Audio",{"stage":834,"step":660,"id":2083,"node":2084,"title":2085,"subtitle":2086,"topic":1267,"track":786},"why-email-uses",209,"Why Email Uses @","The first email's sender picked the one key nobody used",{"stage":834,"step":667,"id":2088,"node":2089,"title":2090,"subtitle":2091,"topic":2092,"track":692},"the-biased-mirror",210,"The Biased Mirror","AI learns the unfair patterns hidden in its training data","AI Ethics",{"stage":834,"step":674,"id":2094,"node":2095,"title":2096,"subtitle":2097,"topic":2098,"track":706},"the-rubber-hand-illusion",211,"The Rubber Hand Illusion","Your brain can adopt a fake hand in minutes","Perception Science",{"stage":834,"step":681,"id":2100,"node":2101,"title":2102,"subtitle":2103,"topic":2104,"track":679},"space-junk",212,"Space Junk","One collision can create thousands of bullets in orbit","Orbital Mechanics",{"stage":834,"step":687,"id":2106,"node":2107,"title":2108,"subtitle":2109,"topic":2110,"track":755},"how-jpeg-shrinks-photos",213,"How JPEG Shrinks Photos","Photos shrink by throwing away detail your eyes barely notice","Image Compression",{"stage":834,"step":694,"id":2112,"node":2113,"title":2114,"subtitle":2115,"topic":1673,"track":713},"two-opposite-places-with-the-same-weather",214,"Two Opposite Places With the Same Weather","Right now two opposite points on Earth share temperature and pressure",{"stage":834,"step":701,"id":2117,"node":2118,"title":2119,"subtitle":2120,"topic":2121,"track":699},"the-internets-attic",215,"The Internet's Attic","Hundreds of billions of old web pages are saved in one archive","Web Archiving",{"stage":834,"step":708,"id":2123,"node":2124,"title":2125,"subtitle":2126,"topic":2127,"track":748},"the-evil-twin",216,"The Evil Twin","A fake hotspot can borrow the name of one you trust","Wireless Security",[2129,2130,2131,2132,2133,2134,2135,2136,2137],{"track":672,"count":646},{"track":786,"count":646},{"track":692,"count":646},{"track":706,"count":646},{"track":679,"count":646},{"track":755,"count":646},{"track":713,"count":646},{"track":699,"count":646},{"track":748,"count":646},{"zone":839,"theme":1210,"lessons":2139,"topics":2192},[2140,2146,2152,2158,2163,2169,2175,2181,2186],{"stage":839,"step":646,"id":2141,"node":2142,"title":2143,"subtitle":2144,"topic":2145,"track":888},"end-to-end-encryption",217,"End-to-End Encryption","Even the messaging company can't read your messages","Secure Messaging",{"stage":839,"step":660,"id":2147,"node":2148,"title":2149,"subtitle":2150,"topic":2151,"track":912},"the-big-bang-on-your-old-tv",218,"The Big Bang on Your Old TV","Part of analogue TV static is the oldest light in the universe","Cosmology",{"stage":839,"step":667,"id":2153,"node":2154,"title":2155,"subtitle":2156,"topic":2157,"track":855},"the-colour-of-heat",219,"The Color of Heat","Hot things reveal their temperature through the color they glow","Thermal Radiation",{"stage":839,"step":674,"id":2159,"node":2160,"title":2161,"subtitle":2162,"topic":1426,"track":741},"the-spinning-beach-ball",220,"The Spinning Beach Ball","One busy task can freeze an entire app",{"stage":839,"step":681,"id":2164,"node":2165,"title":2166,"subtitle":2167,"topic":2168,"track":944},"one-address-a-whole-house",221,"One Address, a Whole House","Your router hides every device behind a single public address","Home Networking",{"stage":839,"step":687,"id":2170,"node":2171,"title":2172,"subtitle":2173,"topic":2174,"track":755},"white-balance",222,"White Balance","Cameras guess the color of the light to make white look white","Photography",{"stage":839,"step":694,"id":2176,"node":2177,"title":2178,"subtitle":2179,"topic":2180,"track":963},"metal-with-a-memory",223,"Metal With a Memory","Some metals return to their shape when warmed","Materials Science",{"stage":839,"step":701,"id":2182,"node":2183,"title":2184,"subtitle":2185,"topic":956,"track":658},"how-maps-find-your-route",224,"How Maps Find Your Route","Your navigation app explores outward like a ripple",{"stage":839,"step":708,"id":2187,"node":2188,"title":2189,"subtitle":2190,"topic":2191,"track":665},"finding-pi-with-needles",225,"Finding Pi With Needles","Pi appears in a game with no circles at 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furious",{"stage":845,"step":674,"id":2221,"node":2222,"title":2223,"subtitle":2224,"topic":2225,"track":692},"the-panda-that-became-a-gibbon",229,"The Panda That Became a Gibbon","Invisible changes can fool image recognition completely","AI Security",{"stage":845,"step":681,"id":2227,"node":2228,"title":2229,"subtitle":2230,"topic":2231,"track":706},"the-flash-lag-illusion",230,"The Flash-Lag Illusion","Moving things look ahead of where they really are","Motion Illusions",{"stage":845,"step":687,"id":2233,"node":2234,"title":2235,"subtitle":2236,"topic":1170,"track":679},"why-rockets-launch-east",231,"Why Rockets Launch East","Earth's spin gives every rocket a free push",{"stage":845,"step":694,"id":2238,"node":2239,"title":2240,"subtitle":2241,"topic":2242,"track":963},"the-wobbly-bridge",232,"The Wobbly Bridge","London's Millennium Bridge swayed because walkers fell into step","Applied Mathematics",{"stage":845,"step":701,"id":2244,"node":2245,"title":2246,"subtitle":2247,"topic":819,"track":713},"only-five-perfect-dice",233,"Only Five Perfect Dice","There are exactly five shapes with identical regular faces",{"stage":845,"step":708,"id":2249,"node":2250,"title":2251,"subtitle":2252,"topic":2253,"track":699},"the-cloud-is-a-building",234,"The Cloud Is a Building","Your photos live in giant warehouses full of humming computers","Cloud Computing",[2255,2256,2257,2258,2259,2260,2261,2262,2263],{"track":658,"count":646},{"track":672,"count":646},{"track":786,"count":646},{"track":692,"count":646},{"track":706,"count":646},{"track":679,"count":646},{"track":963,"count":646},{"track":713,"count":646},{"track":699,"count":646},{"zone":851,"theme":1349,"lessons":2265,"topics":2317},[2266,2271,2277,2282,2288,2294,2300,2306,2312],{"stage":851,"step":646,"id":2267,"node":2268,"title":2269,"subtitle":2270,"topic":2127,"track":748},"the-relay-theft",235,"The Relay Theft","Thieves can stretch your car key's signal from inside your house",{"stage":851,"step":660,"id":2272,"node":2273,"title":2274,"subtitle":2275,"topic":2276,"track":888},"the-byzantine-generals",236,"The Byzantine Generals","How do you agree on a plan when some messengers lie?","Distributed Systems",{"stage":851,"step":667,"id":2278,"node":2279,"title":2280,"subtitle":2281,"topic":1931,"track":912},"time-runs-faster-upstairs",237,"Time Runs Faster Upstairs","Atomic clocks tick faster just 33 centimeters higher",{"stage":851,"step":674,"id":2283,"node":2284,"title":2285,"subtitle":2286,"topic":2287,"track":855},"water-that-freezes-on-command",238,"Water That Freezes on Command","A quiet liquid can stay below freezing until something disturbs it","Phase Transitions",{"stage":851,"step":681,"id":2289,"node":2290,"title":2291,"subtitle":2292,"topic":2293,"track":665},"the-99-test-thats-usually-wrong",239,"The 99% Test That's Usually Wrong","With a rare condition, most positive results can be false alarms","Threat Analysis",{"stage":851,"step":687,"id":2295,"node":2296,"title":2297,"subtitle":2298,"topic":2299,"track":741},"deadlock",240,"Deadlock","Two programs can wait for each other forever","Concurrency",{"stage":851,"step":694,"id":2301,"node":2302,"title":2303,"subtitle":2304,"topic":2305,"track":944},"why-wi-fi-slows-down-in-a-crowd",241,"Why Wi-Fi Slows Down in a Crowd","Only one device can speak on a channel at a time","Wireless Communication",{"stage":851,"step":701,"id":2307,"node":2308,"title":2309,"subtitle":2310,"topic":2311,"track":755},"panorama-glitches",242,"Panorama Glitches","Moving people turn into monsters in panoramic photos","Computational Photography",{"stage":851,"step":708,"id":2313,"node":2314,"title":2315,"subtitle":2316,"topic":956,"track":658},"bill-gates-pancake-problem",243,"Bill Gates' Pancake Problem","His only research paper was about flipping pancakes",[2318,2319,2320,2321,2322,2323,2324,2325,2326],{"track":748,"count":646},{"track":888,"count":646},{"track":912,"count":646},{"track":855,"count":646},{"track":665,"count":646},{"track":741,"count":646},{"track":944,"count":646},{"track":755,"count":646},{"track":658,"count":646},{"zone":872,"theme":1407,"lessons":2328,"topics":2382},[2329,2335,2341,2347,2353,2359,2365,2370,2376],{"stage":872,"step":646,"id":2330,"node":2331,"title":2332,"subtitle":2333,"topic":2334,"track":963},"how-drones-hover",244,"How Drones Hover","Four motors constantly correct a machine that wants to flip","Aerial Robotics",{"stage":872,"step":660,"id":2336,"node":2337,"title":2338,"subtitle":2339,"topic":2340,"track":665},"cheese-and-bedsheets",245,"Cheese and Bedsheets","Search enough data and you'll find impressive nonsense","Data Mining",{"stage":872,"step":667,"id":2342,"node":2343,"title":2344,"subtitle":2345,"topic":2346,"track":672},"why-phone-calls-sound-muffled",246,"Why Phone Calls Sound Muffled","Phone lines cut off the frequencies that tell ‘f’ from ‘s’","Telecommunications",{"stage":872,"step":674,"id":2348,"node":2349,"title":2350,"subtitle":2351,"topic":2352,"track":786},"the-leap-second-that-crashed-websites",247,"The Leap Second That Crashed Websites","In 2012 one extra second took down popular sites","Software Bugs",{"stage":872,"step":681,"id":2354,"node":2355,"title":2356,"subtitle":2357,"topic":2358,"track":692},"the-wolf-detector-that-saw-snow",248,"The Wolf Detector That Saw Snow","AI may recognize the background instead of the object","Model Robustness",{"stage":872,"step":687,"id":2360,"node":2361,"title":2362,"subtitle":2363,"topic":2364,"track":706},"the-hollow-mask",249,"The Hollow Mask","Your brain refuses to see a face as hollow","Visual Illusions",{"stage":872,"step":694,"id":2366,"node":2367,"title":2368,"subtitle":2369,"topic":1301,"track":679},"why-2100-wont-be-a-leap-year",250,"Why 2100 Won't Be a Leap Year","The calendar has a rule for its rule",{"stage":872,"step":701,"id":2371,"node":2372,"title":2373,"subtitle":2374,"topic":2375,"track":713},"the-golden-ratio-myth",251,"The Golden Ratio Myth","Nature's favorite number is real, but massively oversold","Mathematical Patterns",{"stage":872,"step":708,"id":2377,"node":2378,"title":2379,"subtitle":2380,"topic":2381,"track":672},"how-shazam-hears-a-song",252,"How Shazam Hears a Song","A few seconds of noisy audio become a unique fingerprint","Audio Recognition",[2383,2384,2385,2386,2387,2388,2389,2390],{"track":672,"count":660},{"track":963,"count":646},{"track":665,"count":646},{"track":786,"count":646},{"track":692,"count":646},{"track":706,"count":646},{"track":679,"count":646},{"track":713,"count":646},{"zone":878,"theme":1465,"lessons":2392,"topics":2445},[2393,2399,2405,2410,2416,2422,2427,2433,2439],{"stage":878,"step":646,"id":2394,"node":2395,"title":2396,"subtitle":2397,"topic":2398,"track":699},"the-red-dot",253,"The Red Dot","A tiny badge turns an unfinished task into an itch","Attention Design",{"stage":878,"step":660,"id":2400,"node":2401,"title":2402,"subtitle":2403,"topic":2404,"track":748},"why-car-keys-never-repeat-themselves",254,"Why Car Keys Never Repeat Themselves","Each press of your fob sends a code that will never work again","Protocol Security",{"stage":878,"step":667,"id":2406,"node":2407,"title":2408,"subtitle":2409,"topic":1056,"track":912},"youve-never-touched-anything",255,"You've Never Touched Anything","Electrons push back before atoms ever meet",{"stage":878,"step":674,"id":2411,"node":2412,"title":2413,"subtitle":2414,"topic":2415,"track":855},"why-pasta-cooks-slowly-on-everest",256,"Why Pasta Cooks Slowly on Everest","Water boils at a lower temperature when the air is thin","Physical Chemistry",{"stage":878,"step":681,"id":2417,"node":2418,"title":2419,"subtitle":2420,"topic":2421,"track":786},"the-computer-that-flew-to-the-moon",257,"The Computer That Flew to the Moon","Apollo's guidance computer had about 4 KB of working memory","Space Computing",{"stage":878,"step":687,"id":2423,"node":2424,"title":2425,"subtitle":2426,"topic":2421,"track":786},"apollos-1202-alarm",258,"Apollo's 1202 Alarm","Minutes before landing on the Moon, the computer started flashing errors",{"stage":878,"step":694,"id":2428,"node":2429,"title":2430,"subtitle":2431,"topic":2432,"track":741},"the-race-condition",259,"The Race Condition","Correct steps can go wrong when they happen at the same moment","Concurrent Computing",{"stage":878,"step":701,"id":2434,"node":2435,"title":2436,"subtitle":2437,"topic":2438,"track":944},"why-its-called-a-cell-phone",260,"Why It's Called a Cell Phone","The land is divided into ‘cells’ that reuse the same radio frequencies","Cellular Networks",{"stage":878,"step":708,"id":2440,"node":2441,"title":2442,"subtitle":2443,"topic":2444,"track":755},"dark-mode-saves-battery-sometimes",261,"Dark Mode Saves Battery, Sometimes","On OLED screens black pixels are switched off","Display 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guesses, averaged, nailed an ox's weight","Ensemble Learning",{"stage":884,"step":674,"id":2474,"node":2475,"title":2476,"subtitle":2477,"topic":2478,"track":672},"the-sound-only-teenagers-hear",265,"The Sound Only Teenagers Hear","We lose the highest notes as we age","Hearing",{"stage":884,"step":681,"id":2480,"node":2481,"title":2482,"subtitle":2483,"topic":2484,"track":786},"iloveyou",266,"ILOVEYOU","A love letter infected tens of millions of computers in 2000","Hacking History",{"stage":884,"step":687,"id":2486,"node":2487,"title":2488,"subtitle":2489,"topic":2490,"track":706},"the-memory-palace",267,"The Memory Palace","Memory champions store lists by walking through imaginary rooms","Learning Science",{"stage":884,"step":694,"id":2492,"node":2493,"title":2494,"subtitle":2495,"topic":992,"track":692},"learning-from-examples",268,"Learning From Examples","Machines learn rules nobody wrote down by seeing examples",{"stage":884,"step":701,"id":2497,"node":2498,"title":2499,"subtitle":2500,"topic":2501,"track":692},"how-a-machine-learns",269,"How a Machine Learns","A model improves by following tiny slopes toward smaller mistakes","Deep Learning",{"stage":884,"step":708,"id":2503,"node":2504,"title":2505,"subtitle":2506,"topic":1021,"track":679},"looking-into-the-past",270,"Looking Into the Past","You see the Sun as it was eight minutes ago",[2508,2509,2510,2511,2512,2513,2514,2515],{"track":692,"count":660},{"track":658,"count":646},{"track":963,"count":646},{"track":665,"count":646},{"track":672,"count":646},{"track":786,"count":646},{"track":706,"count":646},{"track":679,"count":646}]